EXPERIMENTAL INVESTIGATION OF DYNAMIC TORQUE CHARACTERISTICS OF A ROTATING DRAG BODY IN GRANULAR MEDIA

Engineering notes

Rotational interaction between solid bodies and granular media remains insufficiently understood, particularly with respect to the dynamic torque response that plays a critical role in many engineering and robotic applications.To address this gap, this study develops a modular mechatronic drag-testing platform integrating a six-axis force sensing system for high-precision measurement of torque and residual loads under controlled rotational motion.By systematically varying the oscillation amplitude (10°, 30°, 50°, 70°, 90°), input frequency (0.5, 1.0, 1.5 Hz), the waiting interval between the end of one oscillation and the start of the next (0 and 12 s), and dragbody length (250, 300, 350, 400, 450 mm), the dynamic torque response of the granular medium is quantitatively characterized.Experimental results show that peak torque increases significantly with oscillation amplitude and frequency, whereas the residual torque is largely independent of these parameters but grows approximately linearly with drag-body length, and neither peak nor residual torque is affected by the waiting interval.

Chinese explanation / 中文解读

中文解读待补充：本站会优先为端到端自动驾驶、BEV感知、3D目标检测、轨迹预测、路径规划、LiDAR感知等高价值论文补充中文说明。

Original abstract

Rotational interaction between solid bodies and granular media remains insufficiently understood, particularly with respect to the dynamic torque response that plays a critical role in many engineering and robotic applications.To address this gap, this study develops a modular mechatronic drag-testing platform integrating a six-axis force sensing system for high-precision measurement of torque and residual loads under controlled rotational motion.By systematically varying the oscillation amplitude (10°, 30°, 50°, 70°, 90°), input frequency (0.5, 1.0, 1.5 Hz), the waiting interval between the end of one oscillation and the start of the next (0 and 12 s), and dragbody length (250, 300, 350, 400, 450 mm), the dynamic torque response of the granular medium is quantitatively characterized.Experimental results show that peak torque increases significantly with oscillation amplitude and frequency, whereas the residual torque is largely independent of these parameters but grows approximately linearly with drag-body length, and neither peak nor residual torque is affected by the waiting interval.

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